Response of tomato (Lycopersicon esculentum mill.) varieties to N and P fertilization and spacing

In field trials with three tomato cvs. growth under three levels of N and P fertilizers and four spacings conducted during spring summer season of 1992 and 1993. The cv. Hisar Arun gave the highest fruit yield whereas cvs. Hisar Lalima and Hisar Anmol were at par. The optimum spacing for Hisar Anmol was found to be 45 x 45 cm and the other two gave the higher yield at spacing of 30 x 30 cm. At lower doses of fertilizer (N₅₀P₃₀), the optimum spacing was 45 x 45 cm but at the higher doses (N₁₀₀P₆₀ or N₁₅₀P₉₀) the yield increased up to the spacing of 30 x 30 cm indicating that at closer spacings the crop should be adequately fertilized to get higher yield. The highest dose of fertilizer (N₁₅₀P₉₀) coupled with the close spacing (30 x 30 cm) gave the highest fruit yield for tomato.